#header,#center{
	width:100%;
	font-size:20px;
	line-height:100px;
	font-weight:bold;
}
#header{
	height:150px;
	border:1px solid red;
}
#center{
	padding:20px;
}
#center_left{
	float:left;
	width:20%;
	border:1px solid black;
	background:orange;
}
#center_right{
	float:left;
	width:80%;
	border:1px solid blue;
	background:green;
}